Hello, I'm not developer too, but my experience shows me - rebooting is necessary. Firs of all I rebooted every time when I'm changing the theme using Black Plastic Theme. After months I've installed Theme Customizer. I've used only restarting the services, but I think that is not enough. Some of the icons don't refreshed to the new look and it looks litlle bit scrapy.

I'm rebooting my phone since PR1.2, because it lags and was becomes unresponsible sometimes and the reboot was the only good working solution. Since PR1.3 I've noticed that i'm using the phone more than 7 days without lags or freezing.

Now I'm rebooting my phone periodacally once a week during charging and it doesn't take much time.